Re: [PATCH] [v2]RDMA: add checks for the status of nla_put in ib_nl_send_msg

From: Gal Pressman
Date: Tue Jan 08 2019 - 05:26:16 EST


On 05-Jan-19 19:09, Aditya Pakki wrote:
>
> static int ib_nl_get_path_rec_attrs_len(ib_sa_comp_mask comp_mask)
> @@ -856,7 +873,10 @@ static int ib_nl_send_msg(struct ib_sa_query *query, gfp_t gfp_mask)
> }
>
> /* Add attributes */
> - ib_nl_set_path_rec_attrs(skb, query);
> + if (ib_nl_set_path_rec_attrs(skb, query, nlh)) {
> + nlmsg_free(skb);
> + return -EMSGSIZE;
> + }

IMO, it's better to return the error code of ib_nl_set_path_rec_attrs instead of
an explicit -EMSGSIZE.